• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    CATHODE-RAY TUBE HAVING IMPROVED LINE-SCREEN STRUCTURE A tube has a faceplate including a cathodoluminescent line screen thereon. The faceplate is substantially rectangular with curved, rather than straight, sides. A slit apertured mask is mounted within the tube in spaced relation to the screen. The substantially vertical columns of slits are related to the surface contours of the faceplate and mask, the edge contour of the sides of the faceplate, and a deflection angle of the tube. The end cathodoluminescent lines at the horizontal sides of the screen are formed so that they are parallel to the edge contour of the sides of the faceplate.
    公开号:SU1170980A3
    申请号:SU762353710
    申请日:1976-05-04
    公开日:1985-07-30
    发明作者:Максвелл Моррелл Альберт
    申请人:Рка Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to electronic engineering, in particular to color cathode ray tubes with a luminescent screen and a shadow mask. Cathode ray tubes used in television receivers with a color image are known, which contain a flask with a rectangular bottom having mutually convex sides, a lined cathodoluminescent screen located on the inner surface of the flask bottom, and a shadow mask with holes in it. The shaped lines of the screen and the corresponding apertures of the shadow mask form a series of vertical lines. columns. However, despite the fact that such tubes are widely used, unwanted teeth are formed at the sides of the screens, as well as in the corners during operation. Also known is an electron-rayed tube containing a flask with a rectangular bottom, having mutually tight sides, a cathodoluminescent line screen located on the inner surface of the bottom of the flask, and a shadow mask with slotted holes mounted on a fixed distance from screen, and the phosphor lines of the screen and the corresponding holes in the shadow mask are a series of vertical columns that are linear and parallel to the vertical axis in the center of the screen, with increasing curvature to side of the screen. The curvature of the final phosphor lines exceeds the curvature of the sides of the bottom of the bulb, so these lines are interrupted and cross the side edges of the screen. Such an embodiment of the screen leads to the absence of a defect in serration of the image in the corners of the screen. And the disadvantage of this screen is that the preservation of serration is shown along the sides. It was found that for the aesthetic perception of the viewer, the absence of a jagged image of the length along the armors would prefer it to be absent at the corners of the screen. The purpose of the invention is to improve the image quality by eliminating the jagging on the edges of the screen. This target is achieved by having in the cathode ray tube a flask with a rectangular bottom having mutually convex sides, a cathodoluminescent bar screen located on the inner surface of the bottom of the flask, and a shadow mask with slotted holes at a fixed distance from the fluorescent bar screen, the phosphor lines of the fluorescent bar screen and the corresponding holes of the shadow mask are a series of vertical columns parallel to the vertical axis in the center of the fluorescent bar screen / with an increasing curvature towards the sides of the fluorescent screen, the extremity of the linear bar screen with the increasing curvature to the sides of the fluorescent screen, the extremes of the linear screen / with an increasing curvature to the sides of the fluorescent screen, the extremes of the linear screen / with an increasing curvature to the lateral sides of the fluorescent screen, the extremes of the linear bar screen lines are equidistant to the sides of the bottom of the bulb. FIG. 1 is a schematic representation of a cathode ray tube with a shadow mask; a section along the axis in FIG. 2 is a schematic representation of the luminescent bar screen of the proposed tube. / The cathode ray tube (FIG. 1) contains a glass flask 1 consisting of a rectangular the bottom 2 with the side wall 3 connected by a bell 4 with a neck 5. On the inner surface of the bottom 2 is a three-color cathodoluminescent bar-shaped screen 6 with a multitude of vertical phosphor lines. At a fixed distance from screen 6, there is a shadow mask 7 with a plurality of slit holes for color selection. An electron gun 8 is installed inside the throat 5, designed to generate and direct three electron beams lying in the same plane. A portion of the bottom 2 with an improved ruled shield 6 is shown in FIG. 2. On this screen, 6 lines 9 are equidistantly curved. 10 sides of the bottom .2 flask. Due to this form, the leftmost and rightmost end lines 11 of the passage are uninterrupted, practically from the bottom to the top of the screen, only in the corners of the screen is the jagging of 12 images :: l. To ensure visual uniformity of the screen, adjacent lines are
    31
    terminal lines 11, gradually moving from the greater curvature, which occurs at the sides of the bottom, to a more straight line configuration with increasing distance from the sides. Due to a gradual change in curvature — each line at the sides of the phosphor can be made thicker near the horizontal axis X-X compared to its thickness at the ends (as shown
    709804 to FIG. 2) or the distance between the lines in the matrix construction horizontally may be greater at the top and bottom of the screen compared to 5 with the distance of the horizontal axis of the screen.
    The use of the invention in color television receivers makes it possible to eliminate the defect of gear 0 images along the sides of the screen.
    权利要求:
    Claims (1)
    [1]
    ELECTRON BEAM TUBE containing a flask with a rectangular bottom having mutually convex sides, a cathodoluminescent line screen located on the inner surface of the bottom of the flask, and a shadow mask with slotted holes mounted at a fixed distance from the luminescent line screen, while the phosphor line has a phosphor line screen and the corresponding holes of the shadow mask are a series of vertical columns parallel to the vertical axis in the center of the luminescent line ychatogo screen, with increasing curvature of the lateral sides of the screen, characterized in that, for the purpose of image quality povipeniya za.schet eliminate jagged edges on the line of the luminescent screen, extreme phosphor lines equidistant sides of the bottom of the flask.
    masks image rectilinear.
    what such
    类似技术:
    公开号 | 公开日 | 专利标题
    CA1086810A|1980-09-30|Color cathode ray tube having a striped phosphor screen
    JP2008021663A|2008-01-31|Color picture tube having improved shadow mask aperture pattern
    ES410385A1|1976-04-01|Self-converging color image display system
    SU1170980A3|1985-07-30|Cathode-ray tube
    US3363129A|1968-01-09|Colour tube with triplet phosphor strips making 40deg. to 70deg. angle with horizontal
    US3663854A|1972-05-16|Shadow-mask having rectangular apertures
    US6124668A|2000-09-26|Color cathode ray tube
    US6107729A|2000-08-22|Narrow neck CRT with slot type shadow mask
    US4751425A|1988-06-14|Color display tube with line screen having reduced moire
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    US4280077A|1981-07-21|Cathode-ray tube having corrugated shadow mask with varying waveform
    US4631441A|1986-12-23|Color picture tube having improved line screen
    US3345530A|1967-10-03|Colored television tube with a shadow mask supporting frame having inward ledge to shut off beam over-scan
    SU1304760A3|1987-04-15|Colour kinescope
    KR100296195B1|2001-07-12|Color picture tube with shadow mask having improved mask aperture column spacing
    US3179836A|1965-04-20|Compensator for earth's magnetic field by color dot displacement
    CA1125348A|1982-06-08|Cathode-ray tube having corrugatedmask with increased mask-to-screen spacing
    US6624557B2|2003-09-23|Cathode-ray tube with reduced moiré effect and a particular ratio of scanning pitches to aperture pitches
    KR20000055518A|2000-09-05|Color cathode-ray tube
    KR900005932B1|1990-08-16|Color picture tube having improved shadow mask
    KR950001492B1|1995-02-25|C-crt
    US3439207A|1969-04-15|Color tube with shadow mask aper tures and color dots related to permit use in systems having different numbers of scanning lines
    KR20000067286A|2000-11-15|Shadow mask for color CRT
    US6734612B2|2004-05-11|Tension mask assembly for flat cathode ray tube
    US3835347A|1974-09-10|Colour picture tube with improved color purity
    同族专利:
    公开号 | 公开日
    BE841490A|1976-09-01|
    BR7602776A|1976-11-09|
    IT1059035B|1982-05-31|
    MX3227E|1980-07-28|
    CA1065003A|1979-10-23|
    DE2619871A1|1976-11-18|
    ATA329076A|1978-12-15|
    ZA762561B|1977-04-27|
    JPS51137371A|1976-11-27|
    GB1541301A|1979-02-28|
    PL126028B1|1983-07-30|
    AU1352376A|1977-11-03|
    NL7604736A|1976-11-09|
    FR2310628A1|1976-12-03|
    FR2310628B1|1981-11-20|
    ES447441A1|1977-07-01|
    AT351086B|1979-07-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS5244511B2|1972-08-30|1977-11-08|
    NL7303077A|1973-03-06|1974-09-10|DE2656995C2|1976-12-16|1983-12-01|Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt|Rectangular color selection mask for a color cathode ray tube|
    NL7703233A|1977-03-25|1978-09-27|Philips Nv|TELEVISION DISPLAY TUBE.|
    NL7711713A|1977-10-26|1979-05-01|Philips Nv|COLOR IMAGE TUBE.|
    NL8304179A|1983-12-06|1985-07-01|Philips Nv|COLOR IMAGE TUBE AND DISPLAY EQUIPPED WITH SUCH A COLOR IMAGE TUBE.|
    SU1461377A3|1984-05-25|1989-02-23|Рка Корпорейшн |Colour kinescope|
    DE3511104A1|1985-03-27|1986-10-02|Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt|Shadow mask for a colour cathode ray tube|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US57468475A| true| 1975-05-05|1975-05-05|
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